0

SQl Server 2008 R2 - 我有一个触发器，它设置为向特定电子邮件地址发送电子邮件，该地址由第三方系统监控，该系统根据该消息的主题向某些人群发送消息。对此的限制是，每条消息的主题中只能有一个组号。但是我需要将相同的消息从触发器发送到至少两个组，这意味着必须使用两个不同的主题行生成两封单独的电子邮件。我在想触发器中的光标可能会完成此操作，但我不确定如何编写它。因此，在下面的代码中，我有@cat，每次触发器启动时，我都需要在其中发送一封主题为“ED”的电子邮件。然后，我需要根据当前用于设置主题行的案例语句的条件发送另一封电子邮件，其中主题正在设置。我已按如下方式更新了代码，并通过删除标量变量已移至基于集合的触发器（？？）我还创建了信息并将其插入到“电子邮件”表中，该表将设置一个服务来运行每个10 秒并通过电子邮件发送所有设置为 0 的记录，然后将标志更新为 1。

新代码 -

CREATE TABLE [dbo].[tb_BatchEmail] (
    [BatchEmailID] [bit] NOT NULL DEFAULT 0
    ,[To] [varchar](50) NOT NULL DEFAULT 'someemail' --will never change
    ,[Body] [varchar](255) NULL
    ,[Subject] [varchar](20) NOT NULL
    ,[Profile] [varchar](50) NOT NULL DEFAULT 'Alert' --will never change
    ,[OrderID] [varchar] (25) NULL
    ,[OrderDateTime] [datetime] NULL
    ,[SentDateTime] [datetime] NULL
    ,CONSTRAINT msg_pk PRIMARY KEY CLUSTERED (BatchEmailID)
    ) ON [PRIMARY]
GO



  ALTER TRIGGER [dbo].[VeOrders] ON [dbo].[Orders]
        FOR INSERT
        AS
            SELECT @visitid = i.VisitID
    ,@priority = Priority
    ,@cat = Category
    ,@procedure = OrderedProcedureName
    ,@orderid = OrderID
    ,@orderdate = OrderDateTime
    ,@locationid = CurrentLocationID
    ,@roomid = CASE 
        WHEN RoomTreatmentID IS NULL
            THEN 'No Room#'
        ELSE RoomTreatmentID
        END
FROM inserted i
INNER JOIN livedb.dbo.EdmPatients edp
    ON edp.VisitID = i.VisitID
WHERE Priority = 'STAT'
    AND Category IN ('CT', 'MRI', 'XRAY', 'US', 'NUC', 'ECHO')
    AND CurrentLocationID = 'ED'

IF @cat IN ('CT', 'MRI', 'XRAY', 'US', 'NUC', 'ECHO')
    AND @priority = 'STAT'
    AND @locationid = 'ED'
BEGIN
    DECLARE @msg VARCHAR(500)
    DECLARE @subject VARCHAR(500)

    SET @msg = @roomid + '-' + @procedure + '-' + @priority + '.' --+ 'Order DateTime/Number ' + @order + '/+ @locationid + ' '  + @orderid
    SET @subject = CASE 
            WHEN @cat = 'US'
                THEN 'Test Ultra Sound'
            WHEN @cat = 'CT'
                THEN 'Test C T'
            WHEN @cat = 'XRAY'
                THEN 'Test X-Ray'
            END

    INSERT INTO livedb.dbo.tb_BatchEmail (
        Body
        ,[Subject]
        ,OrderID
        ,OrderDateTime
        )
    SELECT Body = @msg
        ,[Subject] = @subject
        ,OrderID = @orderid
        ,OrderDateTime = @orderdate

END

旧代码 -

ALTER TRIGGER [dbo].[VeOrders] ON [dbo].[Orders]
FOR INSERT
AS
IF NOT EXISTS (
        SELECT *
        FROM dbo.EdmPatients
        WHERE CurrentLocationID = 'ED'
        )
    RETURN

DECLARE @priority VARCHAR(50)
DECLARE @cat VARCHAR(50)
DECLARE @procedure VARCHAR(50)
DECLARE @orderid VARCHAR(50)
DECLARE @locationid VARCHAR(10)
DECLARE @roomid VARCHAR(10)
DECLARE @visitid VARCHAR(50)

SELECT @visitid = VisitID
    ,@priority = Priority
    ,@cat = Category
    ,@procedure = OrderedProcedureName
    ,@orderid = OrderID
    ,@locationid = CurrentLocationID
    ,@roomid = CASE 
        WHEN RoomTreatmentID IS NULL
            THEN 'No Room#'
        ELSE RoomTreatmentID
        END
FROM inserted i
INNER JOIN dbo.EdmPatients edp
    ON edp.VisitID = i.VisitID
WHERE Priority = 'STAT'
    AND Category IN ('CT', 'MRI', 'XRAY', 'US', 'NUC', 'ECHO')
    AND CurrentLocationID = 'ED'

IF @cat IN ('CT', 'MRI', 'XRAY', 'US', 'NUC', 'ECHO')
    AND @priority = 'STAT'
    AND @locationid = 'ED'
BEGIN
    DECLARE @msg VARCHAR(500)
    DECLARE @subject VARCHAR(500)

    SET @msg = @roomid + '-' + @procedure + '-' + @priority + '.' 
    SET @subject = CASE
            WHEN @cat = 'CT'
                THEN '55194'
            WHEN @cat = 'US'
                THEN '59843'
            WHEN @cat = 'XRAY'
                THEN '70071'
            END

    EXEC msdb.dbo.sp_send_dbmail 
         @recipients = N'someemail'
        ,@body = @msg
        ,@subject = @subject
        ,@profile_name = 'Alerts'
END
4

1 回答 1

0

我会将关注点与创建电子邮件并发送它们分开。拥有一项服务，其唯一工作就是发送电子邮件。电子邮件是抽象的，因为它们都有 From、To、Body 和 Subject。创建一个包含所有这些字段的表（例如名为 BatchEmail）。

那么你的触发器很简单。它只是在普通的 select 语句中插入到您的 BatchEmail 表中。

insert into BatchEmail
(To, Body, Subject, Profile)
select N'someemail',
       @msg,
       CASE
            WHEN @cat = 'CT'
                THEN '55194'
            WHEN @cat = 'US'
                THEN '59843'
            WHEN @cat = 'XRAY'
                THEN '70071'
            END,
        'Alerts'

您的 BatchEmail 表应该有一些列或标志来指示何时发送或是否发送。

您的服务（甚至是表格​​上的插入触发器，如果​​您真的喜欢触发器）一次只能选择 1 行尚未处理。

while true
begin

    select top 1 
           @BatchEmailID = batchEmailID,
           @To = to,
           @From = from,
           @Body = body,
           @Subject = subject,
           @ProfileName = ProfileName
    from BatchEmail
    where processed = 0

    if(@BatchEmailID is null)
    break;

    exec msdb.dbo.sp_send_dbmail @To, @Body, @Subject, @ProfileName

    update BatchEmail
    set processed = 1
    where BatchEmailID = @BatchEmailID

end

如果您仍然希望没有单独的服务并坚持在触发器中执行所有这些操作，您可以将 @BatchEmail 转换为表变量，仍然带有 @Processed 位列并一次选择 1 行，之后更新 @Processed每一行。

于 2015-05-18T17:45:17.020 回答